DEFINITIONS Flashcards
Opportunity Cost
The cost of the next-best alternative that has to be given up in decision making.
Free Good
A good which does not have an opportunity cost because it it is not scarce. (N.B. very different from goods which are free as in without a price).
Marginal Utility
The addition made to total utility a consumer receives by consuming one more unit of a certain item.
Utility
The amount of satisfaction satisfaction a consumer receives from consumption of a certain item.
Rational Consumer
A consumer that bases decision-making on maximising utility.
Rational Firm
A firm that bases decision-making on maximising profit.
Veblen Good
A luxury item whose price does not follow the usual laws of supply and demand, as an increase in price will actually cause an increase in quantity demanded.
Consumer surplus
The difference between what consumers are willing to pay for a good/service, and what they actually pay.
Producer surplus
The difference between what producers are willing to supply a good/service for, and what they actually supply it for.
Cross elasticity of demand
A measure of the responsiveness of demand for a certain good given a change in the price of another.
Price elasticity of demand
A measure of the responsiveness of demand for a certain good given a change in its price.
Income elasticity of demand
A measure of the responsiveness of demand for a certain good given a change in the incomes of consumers.
Normal good
A good for which demand rises as incomes rise.
Inferior good
A good for which demand rises as incomes fall.
Derived Demand
A good for which as demand for one